I read on Math documentation that to show a graph of a complex-valued function of a complex variable it's possible to show how it transforms sets of lines that lie in the complex plane. Each line will be mapped into some curve in the complex plane and these can be represented in two dimensions.

The functions CartesianMap and PolarMap defined in this package make pictures of this form. CartesianMap shows the image of Cartesian coordinate lines, while PolarMap shows the effect on polar coordinate lines.

Where can I see how the cose Cartesianmap is implemented? I don't find it!!Thanks